浅析电线电缆检验教学理论与实训合二为一的教改设想

在电线电缆检验理论教学中,如何融入电线电缆检验实训教学,以及两者之间的应用关系,本文作者以高职院校电线电缆制造技术专业教学中的电线电缆检验理论教学与电线电缆检验实训教学为例,对电线电缆产品检验教学的改革进行了分析与探讨。

XLPE电缆外护套故障定位特例分析

XLPE电缆外护套是防止水分进入主绝缘的第一道关口,因此对外护套故障点的及时定位、修补尤为重要。介绍了应用S3000电缆故障定位系统对外护套故障定位的现场特例,并指出采用高压电桥预定位和跨步电压法精确定位相结合是最快捷的电缆外护套故障测寻方法。鉴于外护套故障定位仪对干燥地面下电缆故障定位存在灵敏度不足问题,通过改进定位仪电路,提高了仪器的测试灵敏度。

复杂神经元的间室模型

目的:引入间室模型,探讨间室模型描述复杂神经元电学特征的优点。方法:将神经元分成一个个间室,每个间室分列微分方程。结果:当神经元结构比较复杂,膜的特性具有电压依从性,膜上有突触后电流的时候,间室模型能很好地反映了复杂神经元的电学特性。结论:间室模型很好地反映了复杂神经元的电学特性。

Initial Pre-stress Finding and Structural Behaviors Analysis of Cable Net Based on Linear Adjustment Theory

The tensile cable-strut structure is a self-equilibrate pre-stressed system.The initial pre-stress cal- culation is the fundamental structural analysis.A new numerical procedure was developed.The force density method is the cornerstone of analytical formula,and then introduced into linear adjustment theory;the least square least norm solution,the optimized initial pre-stress,is yielded.The initial pre-stress and structural performances of a particular single-layer saddle-shaped cable-net structure were analyzed with the developed method,which is proved to be efficient and correct.The modal analyses were performed with respect to various pre-stress levels.Finally,the structural performances were investigated comprehensively.